Update demo.py

demo.py

@@ -69,7 +69,7 @@ css = """
 }
 
 /* Set button widths to match the Select Model width */
-.gradio-row button {
+.button {
     width: 250px;  /* Same as the select box width */
     margin: 5px;
 }
@@ -112,7 +112,7 @@ with gr.Blocks(css=css) as app:
             label="Select Model",
             value="Medium Model",
         )
-        submit_button = gr.Button("Run Detection", variant="primary")
+        submit_button = gr.Button("Run Detection", variant="primary", elem_classes=["button"])
         clear_button = gr.Button("Clear", variant="secondary")
     
     submit_button.click(run_test_power, inputs=[model_name, input_text, input_text], outputs=output)